A badminton racket shaft and handle connection molding device and molding process

Abstract

This invention discloses a badminton racket shaft and handle connection molding device and molding process, including a worktable, a clamping assembly, an injection molding assembly, and a correction assembly. The clamping assembly includes a sliding seat, a first cylinder, and a pressure plate. The sliding seat is slidably mounted on the worktable, the first cylinder is mounted on the sliding seat, and the pressure plate is fixed on the piston of the first cylinder. A power assembly for pushing the sliding seat to slide horizontally is provided on the worktable. An adapter is provided on one side of the sliding seat. The injection molding assembly is mounted on the sliding seat. This invention inserts the racket shaft into the handle and injects molten plastic into the handle so that the molten plastic covers one end of the racket shaft. After the molten plastic cools, the racket shaft and handle can achieve an anti-detachment effect. At the same time, during the connection molding process, the horizontal plane of the racket frame is also corrected to ensure that the subsequent horizontal testing of the racket frame and handle meets production requirements.

Description

Technical Field

[0001] This invention discloses a badminton racket shaft and handle connection forming device and forming process, belonging to the field of badminton racket production technology. Background Technology

[0002] A badminton racket is a sporting instrument specifically designed for badminton matches and recreation. It typically consists of the following parts: Frame: The main body of the racket, usually flat, used for hitting the shuttlecock. Frames can be made of different materials, such as carbon fiber, aluminum alloy, and steel, to achieve different performance characteristics. Handle: The handle is the part used for gripping, usually divided into long and short handles. Long handles are suitable for one-handed grips, while short handles are suitable for two-handed grips. Handles usually have grip sleeves for better grip and anti-slip function. Strings: The strings are the cords connecting the two sides of the frame used for hitting the shuttlecock. The type and tension of the strings can be selected according to personal preference and match requirements. Grip: The grip is the end of the handle, usually available in different shapes and materials to accommodate different grip styles and hand shapes.

[0003] In the production and processing of badminton rackets, after the frame is formed using a mold, the shaft and handle need to be connected. The traditional method is to apply glue to the shaft, insert the shaft into the handle, and wait for the glue to dry and cure. However, the adhesive strength of the glue is limited, especially when the glue's adhesion is poor. During the swing of the racket in badminton, the frame and shaft have a certain inertia that causes them to detach from the handle, and the handle is subjected to impact force upon impact. Therefore, after a period of use, the shaft and handle may become loose. However, because the handle's grip position is designed with a specific shape, meaning that the comfortable grip surface of the handle needs to be parallel to the plane of the frame, and this design also facilitates subsequent checks on whether the edges of the frame are symmetrical with the handle, the position of the frame and handle needs to be corrected after fixing the shaft and handle. Currently, the connection and correction of the shaft and handle are separate processes, which increases the time consumption and makes the operation more cumbersome in the production of badminton rackets. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art by providing a badminton racket shaft and handle connection molding device and molding process.

[0005] This invention achieves the above-mentioned objective through the following technical solution: a badminton racket shaft and handle connection molding device, comprising a worktable, a clamping assembly, an injection molding assembly, and a correction assembly. The clamping assembly includes a sliding seat, a first cylinder, and a pressure plate. The sliding seat is slidably disposed on the worktable, the first cylinder is mounted on the sliding seat, and the pressure plate is fixed to the piston of the first cylinder. A power assembly for pushing the sliding seat horizontally is provided on the worktable. An adapter is provided on one side of the sliding seat. The injection molding assembly is mounted on the sliding seat and connected to the adapter. Molten plastic is injected into the inside of the racket handle. The correction assembly includes a fixed frame, a clamping component, and a pushing component. The clamping component is vertically slidably mounted on the fixed frame, which is fixed to the worktable by bolts. The pushing component is slidably mounted on the worktable, and the pushing component, driven by the power assembly, causes the clamping component to perform horizontal correction on the racket frame. The worktable is also provided with a first guide block and a pressing column. The pressing column is located between the first guide block and the clamping component, and both the pressing column and the first guide block are fixed to the worktable. The middle of the first guide block is provided with a guide groove for the racket shaft to pass through.

[0006] Preferably, the clamping member includes an upper movable block, a lower movable block, an upper pressure rod, a lower pressure rod, and a first spring. First sliding rods are provided on both sides of the upper and lower movable blocks. The fixing frame is provided with a first sliding groove for the first sliding rods to slide. The upper pressure rod and lower pressure rod are respectively fixed to the upper and lower movable blocks, with their ends located on opposite sides of the upper and lower movable blocks. Countersunk holes are provided on the sides of the upper and lower movable blocks that are close to each other. The two ends of the first spring are located within the countersunk holes and exert a force on the upper and lower movable blocks that pushes them away from each other.

[0007] Preferably, the pushing component includes a sliding frame, a first rack, a second rack, a gear, a second spring, and a second sliding rod. One end of the sliding frame and the second sliding rod are slidably disposed within the worktable. The first rack and the second rack are respectively fixed to the second sliding rod and the sliding frame. The gear is rotatably mounted within the worktable via a rotating shaft and meshes with the first rack and the second rack. The sliding frame has two horizontally arranged protrusions located on the upper and lower sides of the upper and lower movable blocks, and rollers are rotatably mounted on the protrusions. Guide slopes are provided on the upper and lower movable blocks. Limiting baffles are provided on the worktable corresponding to the installation positions of the first rack and the second rack. The two ends of the second spring abut against the worktable and the sliding frame respectively, and the second spring applies a force to the sliding frame to disengage from the worktable.

[0008] Preferably, the power assembly includes a second cylinder, a push rod, a third spring, and a connecting rod. A second guide block is mounted on the worktable. The sliding seat is slidably disposed with the second guide block. The push rod is fixed to the piston of the second cylinder via the connecting rod. A stop block is provided in the middle of the sliding seat. One end of the connecting rod passes through the stop block. The third spring is sleeved on the connecting rod, and both ends of the third spring abut against the stop block and the push rod, respectively. The piston of the second cylinder passes through the sliding seat. A second sliding groove for the push rod to slide is provided on the worktable.

[0009] Preferably, the injection molding assembly includes a barrel, a motor, a screw, and a mounting base. The mounting base is disposed on a sliding seat, the barrel is disposed on the mounting base, the screw is located inside the barrel, the motor is mounted at one end of the barrel, and the output shaft of the motor is fixedly connected to the screw. The adapter is mounted at the end of the barrel, and the barrel is also provided with a feed hopper.

[0010] A badminton racket shaft and handle connection molding process includes the following steps:

[0011] S1: First, process a mounting part at one end of the formed racket arm, and process an annular groove on the mounting part. The diameter of the mounting part is smaller than the diameter of the racket arm, and the diameter of the annular groove is smaller than the diameter of the mounting part.

[0012] S2: Machining a mounting hole in the center of the handle, with a larger diameter at both ends and a smaller diameter in the middle. The major diameter of the mounting hole is equal to the diameter of the racket shaft, and the minor diameter of the mounting hole is larger than the diameter of the mounting part. Then, prepare a plastic cover, apply adhesive to the inner surface of the plastic cover, and then insert one end of the racket shaft through the plastic cover into the mounting hole of the handle, and stick the plastic cover to one end of the handle.

[0013] S3: Place the racket handle from S2 on the sliding seat and position the racket shaft in the guide groove, while the racket frame is positioned outside the pressure post. Then, the first cylinder drives the pressure plate to press the racket handle tightly, and the power assembly drives the sliding seat and racket handle to move towards the first guide block.

[0014] S4: The connection between the racket frame and the shaft abuts against the pressure post, the plastic sleeve abuts against the first guide block, and the power component continues to drive the pusher to move, so that the clamping component applies a clamping force to the racket frame and keeps the racket frame in a horizontal state.

[0015] S5: Molten plastic is injected into the mounting hole by the injection molding component. The molten plastic covers the mounting part and the annular groove. After waiting for a period of time, the handle and shaft can be removed.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. By setting up a correction component, after the racket shaft is inserted into the handle, the first cylinder drives the pressure plate to press the handle tightly, then pushes the racket frame against the pressure post, and then the pusher drives the clamping component to clamp the racket frame, so that the plane of the racket frame is parallel to the gripping surface of the handle, thereby achieving the effect of correcting the racket frame.

[0018] 2. By setting up an injection molding assembly, with the handle pressed down by the pressure plate and the frame clamped by the clamping parts, the motor drives the screw to rotate, so that after the barrel heats the plastic raw material to a molten state, the molten plastic is injected into the mounting hole through the adapter. The molten plastic fills the mounting hole and covers the mounting part. After cooling for a period of time, the relative positions of the frame and handle are fixed, and the shaft and handle are firmly connected. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of a badminton racket shaft and handle;

[0020] Figure 2 This is a schematic diagram of the structure of a badminton racket shaft and handle connection forming device according to the present invention;

[0021] Figure 3 This is a schematic diagram of the internal structure of a badminton racket shaft and handle connecting and forming device according to the present invention;

[0022] Figure 4 This is a schematic diagram of the sliding frame and clamping member in this invention;

[0023] Figure 5 This is a schematic diagram of the clamping component in this invention;

[0024] Figure 6 for Figure 3 A magnified view of a section at point A in the middle;

[0025] Figure 7 This is a schematic diagram of the power assembly and sliding seat in this invention;

[0026] Reference numerals: 1. Paddle frame; 2. Plastic sleeve; 3. Mounting part; 4. Paddle handle; 5. Mounting hole; 6. Worktable; 7. First guide block; 8. Clamping component; 9. Limiting baffle; 10. Pushing component; 11. Fixing frame; 12. Pressing column; 13. Guide groove; 14. Second guide block; 15. First cylinder; 16. Injection molding assembly; 17. Pressure plate; 18. Power assembly; 19. Sliding seat; 20. Second sliding rod; 21. Second spring; 22. First rack; 23. 24. Feed hopper; 25. Gear; 26. Second rack; 27. Sliding frame; 28. Lower movable block; 29. ​​Upper movable block; 30. Roller; 31. Second cylinder; 32. Second slide groove; 33. Adapter; 34. Lower pressure rod; 35. First sliding rod; 36. First slide groove; 37. Upper pressure rod; 38. Protrusion; 39. Guide slope; 40. First spring; 41. Third spring; 42. Connecting rod; 43. Cannon barrel; 44. Paddle rod; 45. Push rod; 46. Stop block. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] like Figures 1-7 As shown, a badminton racket shaft and handle connection molding device includes a worktable 6, a clamping assembly, an injection molding assembly 16, and a correction assembly. The clamping assembly includes a sliding seat 19, a first cylinder 15, and a pressure plate 17. The sliding seat 19 is slidably disposed on the worktable 6, the first cylinder 15 is mounted on the sliding seat 19, and the pressure plate 17 is fixed to the piston of the first cylinder 15. A power assembly 18 for pushing the sliding seat 19 to slide horizontally is provided on the worktable 6. An adapter 32 is provided on one side of the sliding seat 19. The injection molding assembly 16 is mounted on the sliding seat 19, connected to the adapter 32, and used for injection molding into the inner side of the handle 4. Molten plastic is poured in. The correction assembly includes a fixed frame 11, a clamping member 8, and a pushing member 10. The clamping member 8 is vertically slidably mounted on the fixed frame 11. The fixed frame 11 is fixed to the worktable 6 by bolts. The pushing member 10 is slidably mounted on the worktable 6. Under the drive of the power assembly 18, the pushing member 10 causes the clamping member 8 to perform horizontal correction of the frame 1. The worktable 6 is also provided with a first guide block 7 and a pressing column 12. The pressing column 12 is located between the first guide block 7 and the clamping member 8. Both the pressing column 12 and the first guide block 7 are fixed on the worktable 6. The middle part of the first guide block 7 is provided with a guide groove 13 for the racket arm 43 to pass through.

[0029] The clamping component 8 includes an upper movable block 28, a lower movable block 27, an upper pressure rod 36, a lower pressure rod 33, and a first spring 39. First sliding rods 34 are provided on both sides of the upper movable block 28 and the lower movable block 27. A first sliding groove 35 is provided on the fixing frame 11 for the first sliding rods 34 to slide. The upper pressure rod 36 and the lower pressure rod 33 are respectively fixed to the upper movable block 28 and the lower movable block 27, with their ends located on opposite sides of the upper movable block 28 and the lower movable block 27. Countersunk holes are provided on the sides of the upper movable block 28 and the lower movable block 27 that are close to each other. The two ends of the first spring 39 are located within these countersunk holes and support the upper movable block 28. The upper movable block 28 and the lower movable block 27 exert forces that move away from each other. When the racket frame 1 is being leveled, the upper movable block 28 and the lower movable block 27 are subjected to forces that move closer to each other, causing the first spring 39 to be compressed and the first sliding rod 34 to slide along the first sliding groove 35. This shortens the distance between the upper movable block 28 and the lower movable block 27, while the upper pressure rod 36 and the lower pressure rod 33 move synchronously with the upper movable block 28 and the lower movable block 27, so that the upper pressure rod 36 and the lower pressure rod 33 have a clamping effect on the racket frame 1. When the upper pressure rod 36 and the lower pressure rod 33 remain in a horizontal state, the racket frame 1 can be leveled.

[0030] The pusher 10 includes a sliding frame 26, a first rack 22, a second rack 25, a gear 24, a second spring 21, and a second sliding rod 20. One end of the sliding frame 26 and the second sliding rod 20 are slidably disposed within the worktable 6. The first rack 22 and the second rack 25 are respectively fixed to the second sliding rod 20 and the sliding frame 26. The gear 24 is rotatably mounted within the worktable 6 via a rotating shaft, and the gear 24 meshes with the first rack 22 and the second rack 25. The sliding frame 26 has two horizontally arranged protrusions. Part 37, two protrusions 37 are located on the upper and lower sides of the upper movable block 28 and the lower movable block 27, and rollers 29 are rotatably mounted on the protrusions 37. Guide slopes 38 are provided on the upper movable block 28 and the lower movable block 27. Limiting baffles 9 are provided on the worktable 6 corresponding to the installation positions of the first rack 22 and the second rack 25. The two ends of the second spring 21 abut against the worktable 6 and the sliding frame 26 respectively, and the second spring 21 applies a force to the sliding frame 26 to disengage from the worktable 6. When the frame 1 is horizontally... During calibration, the power assembly 18 applies a thrust to the second sliding rod 20, causing the second sliding rod 20 to drive the first rack 22 to slide synchronously. The first rack 22 drives the gear 24 to rotate, thus the gear 24 drives the second rack 25 and the sliding frame 26 to slide in opposite directions, compressing the second spring 21. At the same time, the roller 29 moves synchronously with the sliding frame 26, causing the roller 29 to abut against the guide slope 38 on the upper movable block 28 and the lower movable block 27, forcing the upper movable block 28 and the lower movable block 27 to move closer to each other, thereby clamping the frame 1 to achieve the effect of horizontal calibration. After the racket shaft 43 and the handle 4 are connected and formed, the power assembly 18 first resets, and the sliding frame 26 resets under the drive of the second spring 21, and drives the roller 29 to move away from the upper movable block 28 and the lower movable block 27. At this time, the upper movable block 28 and the lower movable block 27 move away from each other under the drive of the first spring 39, and the second rack 25 drives the gear 24 to move in the opposite direction, causing the second sliding rod 20 to reset.

[0031] The power assembly 18 includes a second cylinder 30, a push rod 44, a third spring 40, and a connecting rod 41. A second guide block 14 is mounted on the worktable 6. A sliding seat 19 is slidably disposed with the second guide block 14. The push rod 44 is fixed to the piston of the second cylinder 30 via the connecting rod 41. A stop block 45 is provided in the middle of the sliding seat 19. One end of the connecting rod 41 passes through the stop block 45. The third spring 40 is sleeved on the connecting rod 41, and both ends of the third spring 40 abut against the stop block 45 and the push rod 44, respectively. The piston of the second cylinder 30 passes through the sliding seat 19. A second guide block 44 is provided on the worktable 6 for the push rod 44 to slide. When the second cylinder 30 drives the push rod 44 to move, the push rod 44 moves synchronously with the stop block 45 and the sliding seat 19 driven by the elastic force of the third spring 40, so that the racket shaft 43 and the racket handle 4 move towards the pressing post 12. At this time, the push rod 44 contacts the second sliding rod 20, and the clamping member 8 remains stationary. When the connection between the racket frame 1 and the racket shaft 43 comes into contact with the pressing post 12, the sliding seat 19 can no longer move. Driven by the second cylinder 30, the push rod 44 drives the push member 10 and the clamping member 8 to apply a clamping force to the racket frame 1, thereby achieving the effect of correcting the relative position of the racket frame 1 and the racket handle 4.

[0032] Injection molding assembly 16 includes a barrel 42, a motor, a screw, and a mounting base. The mounting base is mounted on a sliding seat 19, the barrel 42 is mounted on the mounting base, the screw is located inside the barrel 42, the motor is mounted at one end of the barrel 42, and the output shaft of the motor is fixedly connected to the screw. An adapter 32 is mounted at the end of the barrel 42. The barrel 42 is also provided with a feed hopper 23. The injection molding assembly 16 can slide horizontally with the sliding seat 19 and can inject plastic while the handle 4 is pressed by the pressure plate 17 and the frame 1 is clamped by the clamping member 8. The plastic is inserted into the mounting hole 5 of the handle 4, thus completing the connection and molding of the racket shaft 43 and the handle 4. Specifically, the injection molding process is as follows: the plastic raw material enters the barrel 42 through the feed hopper 23 and is heated into a molten state. Then, the screw is driven by the motor to rotate, so that the screw drives the molten plastic to push into the adapter 32, and then injects it into the mounting hole 5 of the handle 4 through the adapter 32. After the plastic cools down, because the plastic covers the mounting part 3 and the surface of the annular groove, the plastic cannot be separated from the racket shaft 43, thus achieving the effect of preventing the racket shaft 43 and the handle 4 from falling off.

[0033] A badminton racket shaft and handle connection molding process includes the following steps:

[0034] S1: First, a mounting part 3 is machined at one end of the formed racket 43, and an annular groove is machined on the mounting part 3. The diameter of the mounting part 3 is smaller than the diameter of the racket 43, and the diameter of the annular groove is smaller than the diameter of the mounting part 3.

[0035] S2: A mounting hole 5 is machined in the center of the handle 4. The mounting hole 5 has a larger diameter at both ends and a smaller diameter in the middle. The larger diameter of the mounting hole 5 is equal to the diameter of the shaft 43, and the smaller diameter of the mounting hole 5 is greater than the diameter of the mounting part 3. Then, prepare a plastic cover 2, apply adhesive to the inner surface of the plastic cover 2, and then insert one end of the shaft 43 through the plastic cover 2 into the mounting hole 5 of the handle 4, and stick the plastic cover 2 to one end of the handle 4.

[0036] S3: Place the racket handle 4 from S2 on the sliding seat 19 and position the racket shaft 43 in the guide groove 13, while the racket frame 1 is positioned outside the pressing post 12. Then, the first cylinder 15 drives the pressure plate 17 to press the racket handle 4 tightly. Then, the power assembly 18 drives the sliding seat 19 and the racket handle 4 to move towards the first guide block 7.

[0037] S4: The connection between the frame 1 and the shaft 43 abuts against the pressure post 12, the plastic cover 2 abuts against the first guide block 7, and the power component 18 continues to drive the pusher 10 to move, so that the clamping component 8 applies a clamping force to the frame 1 and keeps the frame 1 in a horizontal state.

[0038] S5: Molten plastic is injected into the mounting hole 5 by the injection molding component 16. The molten plastic covers the mounting part 3 and the annular groove. After waiting for a period of time, the handle 4 and the shaft 43 can be removed.

[0039] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A badminton racket shaft and handle connection molding device, comprising a worktable (6), a clamping assembly, an injection molding assembly (16), and a correction assembly, characterized in that, The clamping assembly includes a sliding seat (19), a first cylinder (15), and a pressure plate (17). The sliding seat (19) is slidably mounted on the worktable (6). The first cylinder (15) is mounted on the sliding seat (19). The pressure plate (17) is fixed on the piston of the first cylinder (15). The worktable (6) is provided with a power assembly (18) for pushing the sliding seat (19) to slide horizontally. An adapter (32) is provided on one side of the sliding seat (19). The injection molding assembly (16) is mounted on the sliding seat (19). The injection molding assembly (16) is connected to the adapter (32) and is used to inject molten plastic into the inside of the handle (4). The correction assembly includes a fixing frame (11) and a clamping member (8). The clamping member (8) is vertically slidably mounted on the fixed frame (11), which is fixed to the worktable (6) by bolts. The pushing member (10) is slidably mounted on the worktable (6), and the pushing member (10) is driven by the power component (18) to make the clamping member (8) perform horizontal correction on the frame (1). The worktable (6) is also provided with a first guide block (7) and a pressing column (12). The pressing column (12) is located between the first guide block (7) and the clamping member (8), and both the pressing column (12) and the first guide block (7) are fixed on the worktable (6). The first guide block (7) has a guide groove (13) in the middle for the racket rod (43) to pass through.

2. The badminton racket shaft and handle connecting and forming device according to claim 1, characterized in that, The clamping member (8) includes an upper movable block (28), a lower movable block (27), an upper pressure rod (36), a lower pressure rod (33), and a first spring (39). The upper movable block (28) and the lower movable block (27) are provided with first sliding rods (34) on both sides. The fixing frame (11) is provided with a first sliding groove (35) for the first sliding rod (34) to slide. The upper pressure rod (36) and the lower pressure rod (33) are respectively fixed on the upper movable block (28) and the lower movable block (27), and the two ends of the upper pressure rod (36) and the lower pressure rod (33) are respectively located on both sides of the upper movable block (28) and the lower movable block (27). The upper movable block (28) and the lower movable block (27) are provided with countersunk holes on the side that is close to each other. The two ends of the first spring (39) are located in the countersunk holes and apply a force that moves away from each other to the upper movable block (28) and the lower movable block (27).

3. The badminton racket shaft and handle connecting and forming device according to claim 2, characterized in that, The pusher (10) includes a sliding frame (26), a first rack (22), a second rack (25), a gear (24), a second spring (21), and a second sliding rod (20). One end of the sliding frame (26) and the second sliding rod (20) are slidably disposed within the worktable (6). The first rack (22) and the second rack (25) are respectively fixed on the second sliding rod (20) and the sliding frame (26). The gear (24) is rotatably mounted within the worktable (6) via a rotating shaft, and the gear (24) meshes with the first rack (22) and the second rack (25). The sliding frame (26) has two water... The two protrusions (37) are located on the upper and lower sides of the upper movable block (28) and the lower movable block (27), and rollers (29) are rotatably mounted on the protrusions (37). Guide slopes (38) are provided on the upper movable block (28) and the lower movable block (27). Limiting baffles (9) are provided on the worktable (6) corresponding to the installation positions of the first rack (22) and the second rack (25). The two ends of the second spring (21) abut against the worktable (6) and the sliding frame (26) respectively, and the second spring (21) applies a force to the sliding frame (26) to disengage from the worktable (6).

4. The badminton racket shaft and handle connecting and forming device according to claim 3, characterized in that, The power assembly (18) includes a second cylinder (30), a push rod (44), a third spring (40), and a connecting rod (41). A second guide block (14) is installed on the worktable (6). The sliding seat (19) is slidably disposed with the second guide block (14). The push rod (44) is fixed on the piston of the second cylinder (30) through the connecting rod (41). A stop block (45) is provided in the middle of the sliding seat (19). One end of the connecting rod (41) passes through the stop block (45). The third spring (40) is sleeved on the connecting rod (41), and both ends of the third spring (40) abut against the stop block (45) and the push rod (44) respectively. The piston of the second cylinder (30) passes through the sliding seat (19). A second slide groove (31) for the push rod (44) to slide is provided on the worktable (6).

5. The badminton racket shaft and handle connecting and forming device according to claim 3, characterized in that, The injection molding assembly (16) includes a barrel (42), a motor, a screw, and a mounting base. The mounting base is disposed on a sliding seat (19). The barrel (42) is disposed on the mounting base. The screw is located inside the barrel (42). The motor is installed at one end of the barrel (42), and the output shaft of the motor is fixedly connected to the screw. The adapter (32) is installed at the end of the barrel (42). The barrel (42) is also provided with a feed hopper (23).

6. A badminton racket shaft and handle connection molding process, employing the connection molding device as described in any one of claims 1-5, characterized in that, Includes the following steps: S1: First, process the mounting part (3) at one end of the formed racket (43), and process an annular groove on the mounting part (3). The diameter of the mounting part (3) is smaller than the diameter of the racket (43), and the diameter of the annular groove is smaller than the diameter of the mounting part (3). S2: A mounting hole (5) is machined in the center of the handle (4). The mounting hole (5) has a large diameter at both ends and a small diameter in the middle. The large diameter of the mounting hole (5) is equal to the diameter of the racket shaft (43), and the small diameter of the mounting hole (5) is greater than the diameter of the mounting part (3). Then, prepare a plastic cover (2), apply adhesive to the inner surface of the plastic cover (2), and then let one end of the racket shaft (43) pass through the plastic cover (2) and insert it into the mounting hole (5) of the handle (4). Then, let the plastic cover (2) stick to one end of the handle (4). S3: Place the racket handle (4) from S2 on the sliding seat (19) and position the racket shaft (43) in the guide groove (13), while the racket frame (1) is located outside the pressure post (12). Then, the first cylinder (15) drives the pressure plate (17) to press the racket handle (4) tightly. Then, the power assembly (18) drives the sliding seat (19) and the racket handle (4) to move towards the first guide block (7). S4: The connection between the frame (1) and the shaft (43) abuts against the pressure post (12), the plastic sleeve (2) abuts against the first guide block (7), and the power component (18) continues to drive the pusher (10) to move, so that the clamping component (8) applies clamping force to the frame (1) and keeps the frame (1) horizontal. S5: The molten plastic is injected into the mounting hole (5) by the injection molding component (16). The molten plastic covers the mounting part (3) and the annular groove. After a period of time, the handle (4) and the rod (43) can be removed.

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